Senior Systems & Security Administrator (Hands-On Role)

Job Description

Job Description

Description:

About the Role

MRA is seeking a senior-level IT professional to take full ownership of our technological environment across two locations supporting approximately 120 employees. This is a hands-on, single-owner IT role. You will be responsible for both strategic infrastructure oversight and day-to-day employee support. The ideal candidate is comfortable leading architecture decisions in the morning and assisting a user with device setup in the afternoon. This is not a purely strategic or helpdesk-only position — it is a balanced leadership role requiring technical depth, accountability, and service orientation.

What You’ll Own

Infrastructure & Security

· Firewall and network management (segmentation, policy review, firmware updates)

· Microsoft 365 & Azure administration

· Endpoint security (EDR/XDR)

· Backup & disaster recovery planning and testing

· Patch management

· Vendor management and licensing oversight

· IT documentation and standards development

· Technology roadmap planning

Daily IT Operations

· Employee helpdesk support (onsite & remote)

· New hire onboarding (device provisioning, account setup)

· Offboarding procedures

· Laptop/desktop imaging and deployment

· Mobile device management

· Troubleshooting hardware/software issues

· Managing support tickets and prioritization

Environment Overview

· Two physical locations

· ~120 employees

· Hybrid workforce

· Microsoft 365 ecosystem

· Firewall-based security architecture

· Security and uptime are top priorities

· No additional internal IT staff currently

Requirements:

Required Qualifications

· 7+ years of progressive IT experience

· Experience serving as primary or sole IT resource

· Strong network & firewall administration experience (Fortinet preferred)

· Microsoft 365 & Azure administration

· Backup and disaster recovery management

· Endpoint security & patching oversight

· Experience managing IT vendors and licensing

· Strong troubleshooting skills across hardware, OS, and applications

· Ability to balance strategic planning with day-to-day support

Personal Attributes We’re Looking For

· Ownership mindset

· Calm under pressure

· Service-oriented but not reactive

· Organized and documentation-focused

· Strong communicator with leadership and staff

· Able to prioritize effectively in a fast-moving environment

What Success Looks Like (First 12 Months)

· Strengthened security posture

· Stabilized and well-documented infrastructure

· Predictable IT processes

· Reduced reactive support volume

· Clear multi-year technology roadmap